[russ_clark]

I have recently installed two varistream controllers to serve my two 60 psi pumps.Both run 100m microbore hoses and I am having difficulty finding the correct setting.I have abided by the instructions and moved the setting back one at a time but to no avail .The pumps just do not shut off when un-plugging poles.
Can you help please

[JM123]

ok russ, the first thing you need to understand is that when the hose is coiled up the pump experiences more backpressure, this is due to an increase in angular velocity of the water as it travels through the hose - you see some of the water travels faster (like on the outside of a racing track) whilst the water closer to the centre actually slows down as water is incompressible and therefore there is displaced by the faster moving water - in turn this means you get an increase in back pressure - which you compensate for when adjusting the variable resistor in the varistream - only problem is when you unravel the hose to use it you have eliminated most of the coils and so the varistream is set too high and therfore when you disconnect the varistream won't switch off the pump.

try setting up the varistream with the hose unravelled and pulled out in a straight line.

other than that you may have a faulty varistream, poorly fitting connectors (not water tight) or not allowing long enough for the pressure to build up as over a 100m of hose there is a lot of surface area for expansion.

hope this helps.

[pjulk]

Have you disconected the pressure switch on your pumps

[JM123]

ooohhhgood call, sorry I assumed you were running shurflo pumps, of course with aquatec pumps etc you don't need to disconnect the switch, just turn it up.

caught me out there paul!!

[russ_clark]

thanks for advice guys
yes I have disconnected the pressure switches
will unravel the hoses in straight line tomorrow and try again.
Cheers
Russ

[JM123]

remember to click back tomorrow and let us know how you got on.

[russ_clark]

will do guys
thanks Paul & JM123

[EasyClean]

ok russ, the first thing you need to understand is that when the hose is coiled up the pump experiences more backpressure, this is due to an increase in angular velocity of the water as it travels through the hose - you see some of the water travels faster (like on the outside of a racing track) whilst the water closer to the centre actually slows down as water is incompressible and therefore there is displaced by the faster moving water - in turn this means you get an increase in back pressure - which you compensate for when adjusting the variable resistor in the varistream - only problem is when you unravel the hose to use it you have eliminated most of the coils and so the varistream is set too high and therfore when you disconnect the varistream won't switch off the pump.

try setting up the varistream with the hose unravelled and pulled out in a straight line.

other than that you may have a faulty varistream, poorly fitting connectors (not water tight) or not allowing long enough for the pressure to build up as over a 100m of hose there is a lot of surface area for expansion.

hope this helps.

Very smart answer, I'm impressed. Just like to add one tip to that. Wherever possible fit non-return arrestors to help reduce the amount of work required by the pump.

[russ_clark]

what the heck are non-return arrestors

[jeff1]

what the heck are non-return arrestors

Its a non return valve, allows the water to travel in one direction only, as soon as you switch your brush on water is instantly there, because the water can't travel back down the hose past the valve.

[russ_clark]

URGENT HELP PLEASE

still no joy
have spoken with williamsons pumps (manufacturer) and they do not recognise my pumps.Apparently they are not shureflow pumps.
they are 60psi flo-pumps only supplied by omnipole.
waiting for call back from them now!!!
anyone else got one of these 60psi flo-pumps#?
and are they compatible with varistreams???

[jeff1]

URGENT HELP PLEASE

still no joy
have spoken with williamsons pumps (manufacturer) and they do not recognise my pumps.Apparently they are not shureflow pumps.
they are 60psi flo-pumps only supplied by omnipole.
waiting for call back from them now!!!
anyone else got one of these 60psi flo-pumps#?
and are they compatible with varistreams???

Russ
All the pumps should be compatible with the varistream.
I changed my pump this week, and I had the same problem as your getting, up until I put my new pump on all was working well, then I fitted my new pump and  no way would it switch off, like you I turned the blue pot down one notch at a time, eventually I left the cover off and carried on adjusting it until it switched off, after checking the position of the pot, it was almost in the switched off position and it seems to be working fine now.
Perhaps one of the guy's can confirm, but there may even be a small screw on the bottom of your pump you can adjust to help with your problem.
Just a couple of things you can check, hope it helps.

[tartan cleaning]

Hi i find having varistream set to approx 12 o'clock or 1 o'clock setting works fine though i am running a 100psi pump so you may need to increase a little also sounds like you need to adjust the little blue dial inside controller to adjust shutoff point

[Ladders]

Hi Russ

I have a 60psi flojet pump with a varistream and they work fine together, hope this helps.

Jeff

[Davew]

Russ, maybe i've got the wrong end of the stick here but I thought the point of a varistream was to shut off the pump when the water was stopped or when the pressure had reached it's maximum required pressure. To change your poles you would turn off your water supply on the valve (on your hip) the pump would shut off then. Obviously when you disconnect your pole the pump will start up again unless you have a non-return valve on your pole connection like Gardiners Ez-snap connecters. Unplugging your poles will cause a drop in pressure otherwise and start your pumps up.

[russ_clark]

Thanks for all replies to date
omnipole have confirmed flo-jet pumps are compatible too- so thats a relief.
I am getting somewhere but still not working properly.
I have completed testing the varistream by just plugging a short 1 metre length of hose into my system - this has got both varistreams flashing red then green (turning off then back on again).This is with the internal adjuster on minimum and the varistream control panel(front of unit ) set at approx 12 0'clock.
I have then done the same thing but this time plugging my 1 metre length of hose into my reels and one of them does the same thing (red then green,etc)
the other remains green (on) but slows down.

Ladders what reel / hose do you use please.

Any more suggestions guys

[Davew]

What if you swap the pumps over? Perhaps one pump is not getting up to pressure? Then the Varistreem is still telling it to keep pumping but it has not enough power to get there?

[russ_clark]

its a two man set up that I have .
I am testing the pumps seperately so I do not think that is the problem.
I have used them this afternoon both seperately and together with exactly the same results

[Alex Gardiner]

Do you need the varistream??

If you have a 60psi Flojet pump with a 100 metre length of microbore you should have just the right flow rate as standard. Then you can just rely on the Flojet pressure switch to switch the pump when turning the pole valve off or unplugging.

We always try to keep the pump set-up as simple as possible.

[tartan cleaning]

have you tried the pump on its own without varistream to check there is no fault with the pump. i also don't think you should have internal blue dial on lowest setting try all the way round turning one notch at a time then you can test as you go